CN203487024U - Heat pump low temperature sludge drying treatment system - Google Patents

Heat pump low temperature sludge drying treatment system Download PDF

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Publication number
CN203487024U
CN203487024U CN201320577012.1U CN201320577012U CN203487024U CN 203487024 U CN203487024 U CN 203487024U CN 201320577012 U CN201320577012 U CN 201320577012U CN 203487024 U CN203487024 U CN 203487024U
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CN
China
Prior art keywords
heat pump
low temperature
kiln
treatment system
drying treatment
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Expired - Fee Related
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CN201320577012.1U
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Chinese (zh)
Inventor
曹姝文
肖立全
刘伟
李政
黄德智
邝俊先
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GUANGZHOU ENVIRONMENTAL PROTECTION ENGINEERING DESIGNING INST Co Ltd
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GUANGZHOU ENVIRONMENTAL PROTECTION ENGINEERING DESIGNING INST Co Ltd
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Abstract

The utility model discloses a heat pump low temperature sludge drying treatment system, which is applied to the field of sludge drying treatment. The system comprises a drying room, a heat pump unit and an air supply pipeline, wherein a circulating fan is arranged in the air supply pipeline, the drying room is provided with a feed port and a discharge port, the heat pump unit comprises a coolant loop which is provided with a compressor, a condenser, a throttling device and an evaporator, an air inlet and an air outlet of the air supply pipeline are both communicated with the drying room, and the evaporator and the condenser are arranged in the air supply pipeline in sequence along the air flowing direction. According to the heat pump low temperature sludge drying treatment system, the heat pump unit is adopted as a heat source for drying sludge, and no fuel is consumed in the drying process, so that the pollution of the fuel to the environment is avoided while the cost of transporting and storing the fuel is reduced, and in addition, the heat pump unit has the characteristic of high energy efficiency ratio, so that the energy consumption can be reduced by more than 30%, and the safety performance is good while electric energy is saved.

Description

A kind of heat pump low temperature sludge drying treatment system
Technical field
The utility model, for sludge drying process field, particularly relates to a kind of heat pump low temperature sludge drying treatment system.
Background technology
Along with industrial development and growth in the living standard, increasing sanitary sewage and trade effluent have been produced, these are useless, sewage can produce the mud of a large amount of water ratio approximately 99% after purification of water quality is processed, and become water ratio and be about 80~85% mud after conventional device for dehydrating sladge waste dehydration.Along with the increase of sewage load, mud annual production is very fast increase also.According to finding, show, the mud that waste water processing station and sewage work produce has nearly 80% not obtain appropriate minimizing and recycling treatment.Mud how that output is huge, complicated component carries out minimizing and resource utilization, has become problem anxious to be resolved.The further mummification of mud is a kind of method of very feasible sludge reduction, and the mud of this class after predrainage can be further dry by conventional drying plant, to reach the object of decrement and convenient transportation.And the current problem that sludge drying device ubiquity energy consumption is higher, energy utilization rate is lower does not produce again secondary exhaust emission by the further mummification of mud after this class predrainage, and how to reduce efficiently energy consumption be a technical barrier in field of Environment Protection.
The current method at 80~85% mud for further mummification water ratio, the more sludge drying process equipment of domestic and international application is mainly heat drying technology, comprises the processing units such as fluidized-bed mummification, belt-type drying, the mummification of Horizontal revolving disc type, oar blade type mummification, the mummification of vertical disc formula, spraying mummification.Drying process and equipment are when considering technology maturation and investment running cost, need select in conjunction with the requirement of different sludge treatment treatments, the problems such as the dust meanwhile, producing in mud drying process, foul smell discharge need to increase in addition treatment facility and prevent and treat.
Conventional sludge drying device energy consumption is higher in the market, and generally need under the condition that has waste heat source heating, use.If processing costs is high, is difficult to maintain normal operation directly to use the conventional energy (as Sweet natural gas, coal, steam etc.).And sewage work is many without waste heat thermal source, the heat that shortage can directly be recycled, if adopt conventional heat drying technology, will drop into a large amount of funds for construction and the energy consumption of thermal source, and cost performance is too low.In addition, existing sludge drying technique is implemented drying and other treatment mainly with single performance equipment, inevitably has the problem of dust, foul smell discharge in dewatered sludge, if do not increased and process facility for prevention and control in addition, will certainly cause secondary pollution to environment.
The main drawback of conventional sludge drying device has at present:
Fluidized-bed mummification: mainly utilize Sweet natural gas, fuel oil, steam etc. as the energy, note abrasionproof when investment, high, the high mud sediment concentration of operation and maintenance cost of energy consumption are high.
Belt-type drying: can utilize the various energy, actual air volume is large, and energy consumption is high, and power consumption is medium, discharges a small amount of noncondensable gas and part waste gas in dewatered sludge, if dedusting is not set, deodoration system can produce secondary pollution.
Horizontal revolving disc type mummification: mainly utilize saturation steam, thermal oil as the energy, energy consumption is high, power consumption is medium, there is mud bonding phenomenon, domestic apply without engineering temporarily, during absolutely dryization, need dry mud back-mixing, discharge a small amount of noncondensable gas and part waste gas in dewatered sludge, if dedusting is not set, deodoration system can produce secondary pollution.
Oar blade type mummification: mainly utilize saturation steam, thermal oil as the energy, energy consumption is high, and power consumption is medium, exists mud bonding phenomenon mud to need back-mixing, discharge a small amount of noncondensable gas and part waste gas in dewatered sludge, if dedusting is not set, deodoration system can produce secondary pollution.
Vertical disc formula:, as the energy, energy consumption is high mainly to utilize thermal oil (combustion fuel heating), and power consumption is medium, needs dry mud back-mixing, and in addition, thermal oil requires high, domestic temporary without application.
Spraying type: mainly utilize high-temperature flue gas or superheated vapour as the energy, energy consumption, power consumption are high, need dry mud back-mixing, discharge a small amount of noncondensable gas and flue gas in dewatered sludge, if do not arranged dedusting, deodoration system can produce secondary pollution.
Utility model content
For addressing the above problem, the utility model provides a kind of heat pump low temperature sludge drying treatment system of energy-efficient, safety and environmental protection.
The utility model solves the technical scheme that its technical problem adopts: a kind of heat pump low temperature sludge drying treatment system, comprises kiln, heat pump unit and the inner air supply duct that is provided with recirculation blower.Kiln is provided with opening for feed and discharge port, heat pump unit comprises the refrigerant loop that is provided with compressor, condenser, throttling set and vaporizer, the inlet mouth of air supply duct and air outlet are all connected with kiln, and vaporizer and condenser are located in air supply duct successively along the flow direction of gas.
Be further used as the improvement of technical solutions of the utility model, connect and be provided with fresh feed pump with opening for feed, in kiln, be provided with the transport unit that the mud of opening for feed is sent to discharge port.
Be further used as the improvement of technical solutions of the utility model, opening for feed and discharge port lay respectively at top and the bottom of kiln, and transport unit comprises some travelling belts, each travelling belt in kiln along vertical layered setting.
Be further used as the improvement of technical solutions of the utility model, the inlet mouth of air supply duct and production well lay respectively at bottom and the top of kiln.
Be further used as the improvement of technical solutions of the utility model, the below of vaporizer is provided with condensate drain outlet.
The beneficial effects of the utility model: in this heat pump low temperature sludge drying treatment system, adopt heat pump unit as the thermal source of dewatered sludge, in drying process, do not need to consume any fuel, thereby when can save transportation and storage of fuels expense, avoid the pollution of fuel to environment, in addition, characteristic due to heat pump unit high energy efficiency ratio, can reduce more than 30% energy consumption, in the time of saves energy, safety performance is good.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model embodiment principle schematic;
Fig. 2 is the utility model embodiment kiln internal structure schematic diagram;
Fig. 3 is the utility model embodiment one-piece construction schematic diagram.
Embodiment
With reference to Fig. 1~Fig. 3, the utility model provides a kind of heat pump low temperature sludge drying treatment system, comprise kiln 1, heat pump unit 2 and the inner air supply duct 4 that is provided with recirculation blower 3, kiln 1 is provided with opening for feed 11 and discharge port 12, heat pump unit 2 comprises the refrigerant loop that is provided with compressor 21, condenser 22, throttling set 23 and vaporizer 24, the inlet mouth of air supply duct 4 and air outlet are all connected with kiln 1, and vaporizer 24 and condenser 22 are located in air supply duct 4 successively along the flow direction of gas.
This heat pump low temperature sludge drying treatment system principle of work is as follows: the mud for the treatment of drying and other treatment enters kiln 1 from opening for feed 11, and recirculation blower 3 operations agitate the gas in kiln 1 to flow at air supply duct 4 internal recycle.Compressor 21 work of heat pump unit 2, the working medium in refrigerant pipeline is drawn the heat that kiln 1 is discharged in damp-heat air in vaporizer 24, from low-pressure liquid working medium, flashes to low-pressure steam, becomes the steam of High Temperature High Pressure through compressor 21 superchargings; In condenser 22, the working substance steam of High Temperature High Pressure is emitted the air that heat heating enters kiln 1, and working medium itself is from the gas cold highly pressurised liquid that congeals into; By throttling set 23, liquid working substance produces blocking effect, has reduced pressure and temperature, become low pressure, low temperature liquid, enter once again the heat that absorbs hot and humid gas in vaporizer 24, so iterative cycles is transported to low-temperature heat quantity in high-temperature medium and goes, and forms the thermodynamic cycle of heat pump unit 2.Kiln 1 is discharged the gas of putting, it is the hot and humid gas that moisture content is higher, its relative humidity is 70~80%, during vaporizer 24 by heat pump unit 2, because vaporizer 24 surface temperatures are lower than air dew point temperature, moisture in gas at evaporator surface by under steam condensation, and outside the state discharge system with liquid water.The wet heating such as the gas after dehumidification obtains in the condenser 22 of heat pump unit 2, have improved gas temperature, have also reduced relative humidity simultaneously.In kiln 1, xeothermic gas directly contacts with the material that is dried, and the heat of material mummification is provided, and has also taken away the moisture in mud simultaneously, so moves in circles.
In this heat pump low temperature sludge drying treatment system, adopt heat pump unit 2 as the thermal source of dewatered sludge, in drying process, do not need to consume any fuel, thereby when can save transportation and storage of fuels expense, avoid the pollution of fuel to environment, in addition, characteristic due to heat pump unit 2 high energy efficiency ratios, can reduce more than 30% energy consumption, in the time of saves energy, safety performance is good.Simultaneously, because dewatered sludge carries out in the environment of sealing, all that produce in drying process have smelly obnoxious flavour to discharge with the form of liquid by the condensation of vaporizer, waste gas can be accomplished not leak, to surrounding environment, can reduce to minimum pollution, be conducive to carry out mummification operation near population center.
Be further used as the improvement of technical solutions of the utility model, connect and be provided with fresh feed pump 13 with opening for feed 11, in kiln 1, be provided with the transport unit that the mud of opening for feed 11 is sent to discharge port 12.The utilization of fresh feed pump 13 and transport unit, the level of automation of raising whole system.
Be further used as the improvement of technical solutions of the utility model, opening for feed 11 and discharge port 12 lay respectively at top and the bottom of kiln 1, and transport unit comprises some travelling belts 14, and each travelling belt 14 is interior along vertical layered setting at kiln 1.Mud in transport process, moves to end from the head end of transmission belt 14 on travelling belt 14, then falls into the travelling belt 14 of lower floor, and the travelling belt 14 that layering arranges improves sludge drying effect.
Be further used as the improvement of technical solutions of the utility model, the inlet mouth of air supply duct 4 and production well lay respectively at bottom and the top of kiln 1.
Municipal wastewater treatment plant or enterprise wastewater station through mud that to dewater to water ratio be 80~85% through fresh feed pump 13 continuously on the travelling belt 14 of the continuous operation in input kiln 1, heat pump unit 2 is less than 10% by humidity, the dry air that temperature is approximately 50 ℃ is from the lower curtate input of kiln 1, the wet mud being evenly arranged on travelling belt 14 entering is dried, mud through to lower and on continuous dry-heat air effect make the water ratio of mud be down to 10~30%(on request) by worm conveyor, be delivered to the outer mud storage system of kiln 1 and store or be transported to and need point of destination.
The humidity that enters kiln 1 is less than 10%, the dry air being produced by heat pump unit 2 that temperature is approximately 50 ℃ is from bottom to up to mud effect, after wet sludge blanket, moisture absorption becomes the nearly saturated moist air of humidity nearly 99%, from the inlet mouth of air supply duct 4 flow through vaporizer 24 and the condenser 22 of heat pump unit 2, condenser 22 through heat pump unit 2 is cooled to water of condensation discharge by the moisture in this saturated moist air, the recirculated air of unwatering is again through throttling set 23, the effect of vaporizer 24 and compressor 21 etc., recirculated air is risen to approximately 50 ℃ of left and right more again, humidity is less than 10% level simultaneously, enter again that kiln 1 is interior to be dried mud, go round and begin again.
Be further used as the improvement of technical solutions of the utility model, the below of vaporizer 24 is provided with condensate drain outlet 25.Water of condensation on vaporizer 24 is from splashing into condensate drain outlet 25 and discharging system.
Normal dry operating mode of the present utility model is to move under the low-temperature condition of approximately 50 ℃, farthest the original organic component in mud is remained, and is conducive to the comprehensive utilization of dried mud.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.

Claims (5)

1. a heat pump low temperature sludge drying treatment system, it is characterized in that: comprise kiln, heat pump unit and the inner air supply duct that is provided with recirculation blower, described kiln is provided with opening for feed and discharge port, described heat pump unit comprises the refrigerant loop that is provided with compressor, condenser, throttling set and vaporizer, the inlet mouth of described air supply duct and air outlet are all connected with described kiln, and described vaporizer and condenser are located in described air supply duct successively along the flow direction of gas.
2. heat pump low temperature sludge drying treatment system according to claim 1, is characterized in that: connect and be provided with fresh feed pump with described opening for feed, be provided with the transport unit that the mud of opening for feed is sent to discharge port in described kiln.
3. heat pump low temperature sludge drying treatment system according to claim 2, it is characterized in that: described opening for feed and discharge port lay respectively at top and the bottom of described kiln, described transport unit comprises some travelling belts, described in each travelling belt in described kiln along vertical layered setting.
4. heat pump low temperature sludge drying treatment system according to claim 3, is characterized in that: the inlet mouth of described air supply duct and production well lay respectively at bottom and the top of described kiln.
5. according to the heat pump low temperature sludge drying treatment system described in claim 1~4 any one, it is characterized in that: the below of described vaporizer is provided with condensate drain outlet.
CN201320577012.1U 2013-09-17 2013-09-17 Heat pump low temperature sludge drying treatment system Expired - Fee Related CN203487024U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320577012.1U CN203487024U (en) 2013-09-17 2013-09-17 Heat pump low temperature sludge drying treatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320577012.1U CN203487024U (en) 2013-09-17 2013-09-17 Heat pump low temperature sludge drying treatment system

Publications (1)

Publication Number Publication Date
CN203487024U true CN203487024U (en) 2014-03-19

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103864275A (en) * 2014-04-03 2014-06-18 竺勇 Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof
CN104129896A (en) * 2014-07-25 2014-11-05 华南理工大学 Heat-pump drying device of sludge
CN105060673A (en) * 2015-07-27 2015-11-18 广州市环境保护工程设计院有限公司 Sealed low temperature sludge desiccation system
CN106123566A (en) * 2016-08-10 2016-11-16 胡甜甜 A kind of porous drying unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103864275A (en) * 2014-04-03 2014-06-18 竺勇 Bio-drying and dehumidifying coupled heat-pump flap tower type sludge drying process and system thereof
CN104129896A (en) * 2014-07-25 2014-11-05 华南理工大学 Heat-pump drying device of sludge
CN104129896B (en) * 2014-07-25 2017-04-05 华南理工大学 A kind of sludge heat pump drying device
CN105060673A (en) * 2015-07-27 2015-11-18 广州市环境保护工程设计院有限公司 Sealed low temperature sludge desiccation system
CN106123566A (en) * 2016-08-10 2016-11-16 胡甜甜 A kind of porous drying unit

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20140319

Termination date: 20200917